I finally took the plunge and brought a Intel 4670k cpu, Msi g45 gaming motherboard and a new cooler for a nice price of £300.

 

So upon receiving I instantly set about stripping my old bits out, cleaning all parts and installing the new bits of equipment. Finally put finishing touches on my new build plug everything in, double checked that I have everything in the right place, then switched on the magic.

 

Computer boots up fine goes into Windows then the bsod. Bugger, the old drivers must be conflicting with new hardware, not the end of the world I'll wipe the hard drive and start again.

So now I'm trying to boot from the CD drive rather than the hard drive, after rebooting multiple times I cannot get into the bios. Bugger again. 

By that time I'm starting to get annoyed try booting again now in getting no display at all. Just to clarify I was receiving the signal from the graphics card)

 

Anyway I try and cut the story down. I just cannot get a signal any more I've tried everything that has worked for me in the past. Remove graphics card and plug monitor in to motherboard, removed everything but the minimum, tried old previously fully working cpu and motherboard, still nothing which is worrying because the pc was working flawlessly up to that point.

 

I'm by no means an expert but I've always been able to fix and build my own rigs, now I'm out o f options other than sending back the new bits, which I'm reluctant too until I'm fairly certain it that.

 

Any suggestions from people with a greater knowledge/experience than me is very welcome. Having to use my kindle fire to type on here is very slow and painful.

 

My rig: Intel I5 4670k cpu

             Msi g45 gaming motherboard 

              Amd Radeon 6870 graphics card.

             4gb Kingston hyper x 1600 ddr 3 ram

              Seagate 2tb hdd

             Thermaltake 750watt modular psu

             Antec 900 case

              

When you installed the motherboard and CPU did you re install windows? As I recall from XP onwards you have to reinstall windows.

With Windows 7 on, you can use sysprep to prepare a computer for imaging, one option is to "reseal" windows. What this does is run through the basics of setup, installing drivers etc. for new hardware just like a full install, except your software, files etc. remain intact. Do this before shutting down the old computer. No need to fully install windows then, just swap the hardware. This is normally used in business to image the same desktop image to multiple different hardware specs, but works at home as well.

 

For the blank screen, try a different known good PSU.

You HAVE remembered to plug the cpu fan in???

 

If not, you may have killed the cpu by now.

 

(No, I am not being daft, it has happened, I had a brand new system turn up where they had failed to do this, and with the same symptoms)

If you have no spare PSU- it's possible to start the PSU with the power plug out of the motherboard by shorting a couple of pins on the output plug. Then test for the voltages on the output plug . Again along the lines of GGs post- is the start up cable still connected. ( front case to motherboard).

So no display even at BIOS?

 

If so it's not a windows issue.

 

Are the fans spinning up, LED lights on the mobo? If so probably not the PSU, but not guaranteed.

 

Take everything off the mobo (cpu, memory, drives and any other additional cards) reseat the power leads and try booting it. It'll fail but should still go to the BIOS.

Put everything back one bit at a time booting in between.

 

I've seen that issue with faulty / unseated memory a few times. Less so CPU faults.

 

Remember to leave the PSU plugged in so it's earthed and touch the case before you touch anything inside if you're not already wearing an earthing strap.

Edited 9 May, 201412 yr by Aspman

I have a spare psu I have already tried still the same. The pc boots up as it should all the fans work the hard drive is powering up, graphics card fans power up, just nothing on the screen. I've tried hdmi, vga and my usual hdmi to dvi cables. Pulled the cpu to check for bent pins but they were fine, reseated the heatsink and fan just to make sure.

 

Basically all of the obvious and simple checks have been performed, I've searched the net and found numerous threads with the same issue, the solutions that have worked for them have not worked for me. 

 

I tried to cut a corner by not wiping the hard drive just see if it would allow me to delete old drivers and reinstall the new ones, it's not the right way but I can't see how that would cause this issue.

 

I have a old amd 4870 graphics card I can try just to rule out that, but the fact I'm not getting a signal from the motherboard either makes me think it's not that.

 

This one has me thoroughly stumped especially seeing as the previous cpu and m/b were working perfectly fine before I removed.

 

I don't use a earth strap but I do touch the case before I touch components, but it is possible I may have forgotten on the odd occasion. I'm just trying to make sure it's a hardware fault before I rma it or spend more money.

 

I have my trusty hammer at the ready and its taking a lot of restraint to stop me from using it.

Tried a different monitor or checked the cable at the monitor end?

Monitor powered up?

 

Wouldn't be first time I was fooled by something daft like that.

Yeah I've tried another monitor to no avail.

 

I haven't had much time due to work commitment ect but tomorrow I will strip everything down and start again to see what happens.

 

I really don't like admitting defeat but I may be on the verge.

 

Keep up the suggestions though guys it all appreciated.

Is the mobo seated correctly in the case? I've had problems in the past where the mobo was shorting out to the case.

Sent from my Nexus 4 using Tapatalk

Are you getting any power on self test beeps when the system initially powers up?. How are you setting fsb and multiplier, by auto detect?

I would be looklng at a PSU issue.

 

Do you know anyone with a gold certified PSU you could try? new motherboards and CPUs can act weird on older ones.

 

Unplug everything from the board and clear the cmos by removing the battery for a few mins. Then rebuild using the new spec PSU and keep adding one more component after each boot until it stops working.

 

I had this exact same issue and the motherboard was going into safe mode as it wasnt getting the correct voltages

This is how I would test this and have had this problem before, disconnect everything on the peripheral side inc power connectors. With the CPU fitted but NO memory power up you should get  a POST fail set of beeps (should be 3 I think) if you get this then the CPU and mobo are OK. Then boot up with the minimum amount of memory that the mobo is OK with (some will accept one stick some need two) with no graphics card connect to on board connector if this works and you can see the POST screen (and BIOS) then add bits till it fails. I suspect as others have said it will be the PSU is not providing what you need. Unfortunately PSUs are still sold on total power not on where this power is provided so you find one 750w PSU fails but a 500w works as it has the power where it is needed.

 

Good luck

 

John  

Is the mobo seated correctly in the case? I've had problems in the past where the mobo was shorting out to the case.

Sent from my Nexus 4 using Tapatalk

I'm pretty sure it is I've even removed it from the case put it on a bit of cardboard reconnected everything powered up still no display.

Are you getting any power on self test beeps when the system initially powers up?. How are you setting fsb and multiplier, by auto detect?

I cannot get into the bios or Windows at all, if I can get into bios or Windows I can fix it but I cannot get a signal at all.

One thing I had years and years ago - it probably isnt, because no one uses or fits them anymore........

 

The drive in a floppy disk drive went short circuit and dragged the psu voltage down.

 

Unplugged the drive and the PC sprang into life.

 

I assume you have tried putting the old cpu back in??

This is how I would test this and have had this problem before, disconnect everything on the peripheral side inc power connectors. With the CPU fitted but NO memory power up you should get  a POST fail set of beeps (should be 3 I think) if you get this then the CPU and mobo are OK. Then boot up with the minimum amount of memory that the mobo is OK with (some will accept one stick some need two) with no graphics card connect to on board connector if this works and you can see the POST screen (and BIOS) then add bits till it fails. I suspect as others have said it will be the PSU is not providing what you need. Unfortunately PSUs are still sold on total power not on where this power is provided so you find one 750w PSU fails but a 500w works as it has the power where it is needed.

 

Good luck

 

John  

Thanks John that sound promising. I shall do that tomorrow soon as I get a chance and will post back on here.

One thing I had years and years ago - it probably isnt, because no one uses or fits them anymore........

 

The drive in a floppy disk drive went short circuit and dragged the psu voltage down.

 

Unplugged the drive and the PC sprang into life.

 

I assume you have tried putting the old cpu back in??

No I don't use a floppy.

 

The motherboard has voltage check points so I may break out the multimeter to check voltages.

 

Yes I have tried the old cpu in the old motherboard, I can't put it into the new motherboard because it's a amd phenom the new motherboard is a intel 1150 socket.

I cannot get into the bios or Windows at all, if I can get into bios or Windows I can fix it but I cannot get a signal at all.

Not even a post pass beep or beeps for a fail?. I get that you don't get a visual confirmation of post, but are you not getting any audible indication either?.

OK, I am betting the board is dead; the question now is why.

 

I would start looking around the area where the main connector from the PSU fits - looking especially at capacitors that may have blown, and also for possible blackened areas around components.

It's the CIA coming to steal your data

Edited 10 May, 201412 yr by cheezemonkhai

If the mobo has on board graphics and you've installed a separate graphics card it is most likely just a jumper setting issue.

If everything is powering up, then you can rule out with some degree of certainty psu and cpu issues as most won't do anything if either is at fault.

Another possibility is an out of date bios for your CPU choice. Usually you download the update file, and put into a floppy, cd or USB and follow the instructions for your motherboard (some require jumpers to be set a certain way.

My gut says jumpers

Ok guys I've got to the bottom of it I think. 

 

I used the multimeter to check the psu power pins, every thing was correct so the psu is fine. Next I checked the voltage output pins on the motherboard, are marked up as cpu power supplies. Only 2 out of the 6 points were showing a voltage, not a good sign.

 

I then connected my old cpu and motherboard back up and boom it works, which is strange because I already tried that. So, new cpu and motherboard is to be sent back.

 

Thank you for all your input guys hopefully I will have it working when I get around to rma'ing it.

Dip switches 100% correct?

Dip switches 100% correct?

 

 

 

You what lol 

 

 

They scraped them years ago 

 

 

That board will use an EFI bios I reckon (works with a mouse !!)

 

 

DOA board, although I just read your OP, and it did work, strip it all back out on a bench and hook up PSU keyboard and VGA, then start again , if that don't work send it back but don't tell them it worked briefly.