PC doesn't boot after restart (black screen) was running fine before.

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bmnatz

Reputable
Sep 12, 2014
3
0
4,510
Hi everyone,

My computer has been working fine for years without any issues, around 4 months ago I did swap out my GTX580 for a Radeon R290X, no problems with the swap, everything went smoothly.

However, yesterday my pc started to run sluggish, programs kept crashing. Today in the morning I restarted my computer, which resulted in black screen, no post screen, no nothing.

I'm kind of lost as I think I tried everything - all to no avail.

I cleared CMOS (with button, as well as removing battery)
Set mainboard to 2nd bios
Removed all but 1 RAM
Set the jumper on GPU to 2nd Bios
switched monitor cable
Inserted GPU into another PCI-E 16x slot
Tried to boot up without GPU, reset and insert GPU afterwards.


I tried a couple of more things which I can't remember but they didn't seem relevant to me anyways, most of them occured when installing a new video card, but mine was already running for 4 months+

Unfortunately I can't switch back to the GTX580 for testing as I gave that one to a friend already which lives in another country.

Is it possible that my PSU has gone bad ? Please note that I NEVER turn my pc off, it has been running for years without a single power off.

What else can I try ?

System specs are:

Asus Maximus IV Extreme Z
Intel Core i7-2700K
Corsair Vengeance 16GB (4x4)
MSI Radeon R9 290X Twin Frozr
PSU Cooler Master Silent Pro 850W
 
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Shaun o

Shaun o

Illustrious
Oct 7, 2007
6,113
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41,960
Well the first question is, how old is the current PSU in age.
By the look of it at a guess about 2-3 years old.

Simply put, a Psu on 24-7 is going to weaken at some point.
It`s the nature of electronics. Often they degrade slowly unless you do something completely stupid with a PSU.
Voltage output drops along with Amps.
So if crashes are frequent, when working or slow down by adding for example a 290X card.
Your adding more strain to an already worn or aged PSU.

Yes PSU in short. If the slowdown has become more of a notice, then a power down and no power from the PSU.
Then i`ts the indicator that the PSU is at fault.
Caps are old, heat damaged and cannot hold enough of a rated charge anymore to allow the PSU to function or deliver the correct amount of power drawn from it for the system/ or parts. Heat is a killer for any type of electrolytic based capacitor. heavy use and age.

Time for a PSU, or a Test with another one in the system to confirm.

As a quick test, turn the rocker switch off on the back of the psu.
Flick the power cord to the wall switch off.
Count to ten, flick it back on. then flick the rocker on the PSU.
Press the power button on the tower and see what happens.
If it powers up. then it tells you a component or circuit in the psu is weakening. or circuit protection is kicking in as part of the Psu is on it`s way out.
ok.

Protection circuits in Psu`s, can be over voltage, or under voltage protection.
Ripple protection.



 
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B

bmnatz

Reputable
Sep 12, 2014
3
0
4,510
I'll go ahead and buy a new PSU now and hope that's the culprit. Please note the PC does power on it even seems like it's booting but gets stuck somewhere. The screen however never turns on
 
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robert5

Reputable
May 24, 2014
3
0
4,510
Code:
:no:Ok start by plugging you vga\hdmi cable from your screen on your onboard port to use your onboard video if it works its your card but even thought i had a prob with a psu resulting to give me a black screen once!!!
 
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