PC blank display?

Bezzaboy1234 · 4 Feb 2015 at 14:07

Hi guys,

So recently just repasted my AMD CPU from my HTPC as it was looking a bit dry and crumbly (my fault I don't replace it often enough) put some arctic silver on that I had lying around and reseated as usual, However. Now I am getting absolutely nothing out of the PC. I have checked that its not the cables or the monitor its connecting to by trying all 5 of the monitors and tv's and nothing seems to work. So its gotta be something to do with the PC itself,

The build spec is in the HTPC log in my sig.

I have tried removing and cleaning everything, re-seating all the ram, hard drives, and pretty much everything else, I noticed there was a slight bit of paste on one of the pins when I removed it and so I wiped it with some tissue and put it back in, I wasn't sure if there is a specific cleaning tutorial for cleaning the CPU pins? I was thinking maybe a dab of Isopropyl alcohol would do the trick surely?

None of the pins are the bent, the socket looks fine, I'm tearing my hair out without my HTPC, I use it everyday and every night.

EDIT: The PC does boot, and the hard drives and everything are spinning up. just no display output whatsoever.

Has anyone got any advice?

Bezzaboy1234 · 4 Feb 2015 at 18:11

porushinobu said:
does it sound like its turning on?

Yes it definitely sounds like its booting fine,

No GPU in it, I might have one spare to try on it, If you look in the HTPC log the board only has one VGA output it has no other display outputs I can use.

Bezzaboy1234 · 5 Feb 2015 at 21:47

biuro74 said:
Are you completely sure booting is fine ? You know your computer and you know how long it loads Windows up - so does HDD LED blink during WHOLE booting process and stops until login screen is supposed to show up ? If audio is turned on - you can hear Windows login sound ?
What "no display" means - just black screen with "no signal" message (and monitor LED on), or something suggesting monitor fault rather ?

I have just tried the sound think, No sound on boot-up, left it on for a good while waiting for the normal windows sounds which take about a minute for it to get to.

I have noticed a faint set of beeping, every 2 seconds a beep beep. very faint to the ear. I'm unsure as to what this is?

No display as in nothing appears on the screen, and none of my monitors recognize there being any output. I have tested this on Four different monitors with exactly the same results.

Anyone know what the double beep is?

Bezzaboy1234 · 6 Feb 2015 at 15:28

I'll try popping in a spare PSU a bit later on see if that fixes the problem,

Not getting any BIOS or POST on the machine whatso-ever regardless of monitor used.

The RAM has always been a bit dodgy, not sure if have some spare DDR3 anywhere but will have a look, Have tried each one individually e.t.c but this has also had no effect.

took the HDD out and put it in a small 2.5" hard drive caddy, works perfectly fine as well as the other 3 drives. So it can't be the HDD.

Bezzaboy1234 · 6 Feb 2015 at 15:49

I have pretty much done this outside the case,

It wont post with the CPU, RAM and PSU, whether its one stick of ram or two.

Not sure where to go from here? It has to be one of the three or the board?

Bezzaboy1234 · 6 Feb 2015 at 16:04

Haven't tried the PSU, Not in to try it at the moment.

Have re-seated it several times now, The last time I re-seated it worried me as it simply came out the socket attatched to the CPU cooler, which I can assume isn't good, I will check again if its seated properly.

Everything is plugged in.

As I said earlier in my post it seems to be making a faint double beep:

"I have noticed a faint set of beeping, every 2 seconds a beep beep. very faint to the ear. I'm unsure as to what this is?"

Bezzaboy1234 · 6 Feb 2015 at 17:43

The only beeps that it seems to be making are two very short 1 second beeps followed by a pause, then another two quick beeps.

Have tried to clear the CMOS and left over night, still does nothing.

Bezzaboy1234 · 10 Feb 2015 at 00:44

Right, So I have been able over the weekend to spend some more time with it.

I have removed the board and CPU w/cooler out of the case and plugged it into a normal Full size ATX PSU.

I have tried another graphics card, as well.

But still nothing, I have tested with and without ram, on 3 completely different monitors one of which a TV. and with 3 different VGA cables, both with the onboard and the GPU. and still nothing.

When I simply boot the machine with just the board and CPU. it sounds fine, but as soon as I slot some ram in the DIMM slots it starts making the 2 beeps every second.

Im guessing that its either the CPU or the Mobo at this point.

Surely if the Motherboard was fried the whole system wouldn't power on? or show signs of posting.

I have had a look at the CPU and it looks fine, but was wondering if there is any way to sort of clean the pins as they are so small, I think I can see a dab of thermal paste on one but I cannot get to it without causing damage.

Any Ideas?

Bezzaboy1234 · 11 Feb 2015 at 23:21

Have Finally managed to solve the problem,

After careful inspection of the chip under a magnifying glass there were around 3 pins that had some thermal paste making contact, after a good clean and re-installing the system is finally booting!

Having some trouble with the memory as it wont boot with 1 of the RAM sticks, installed, If it is installed in DIMM2, the system wont boot. But will boot if installed in DIMM1 and with the other stick.

Have always had trouble with this crap G.Skill memory. Will get it replaced soon I think.

Thanks for the help guys!

R