Extreme slow boot, crashes from time to time. Nothing seems wrong tho?! Really mysterious........

matsz2sek

Commendable
Mar 29, 2016
2
0
1,510
It all started with BSOD crashes in CSGO. Giving "atikmpag.sys" error when I had a HD7970 and r9 280X in crossfire. I removed the HD7970, this one seemed causing the problem. PC won't start with the 7970 ( fan goes 100% with black screen ). I have a water-cooled system, so I reinstalled the air cooling components to test everything.

So I thought I solved this. Reinstalled the drivers, and went on playing some CSGO.
I still had some BSOD and laggy things, but after a reboot it worked properly again and so I just continued like this. Problem wasn't solved it seems.

But recently I installed the watercooling again, and since then everything went completely wrong.
This is the current setup :
Gigabyte z97MX g1 gaming mobo (recently upgraded bc my old mobo died)
8 gb DDR3 corsair 1600 mem
i5 4790K, not overclocked
sapphire r9 280x
Corsair 850 watt modular PSU
Samsung evo 850 ssd 250 gb
Everything is water-cooled and temps don't go above 50 degrees at full load ( CPU and GPU both 100% prime95 en furmark)
Legal windows 7 ultimate x64

The problem lies there that from time to time, it takes a freakin long time to boot into windows (5 mins is long when you're used to 20 secs). BUT it seems like it already starts with the motherboard. When I start the PC, the fans and pump start working, but it takes a long time for the PC to even get past boot phase. The BEEP from a successful boot takes some time and the "Gigabyte" bios logo appears very laggy. After some minutes, the famous windows start animation begins to develop ( the 4 colored squares) this happens VERY laggy and takes some time. After this slow boot, I can't even browse the internet. Everything is laggy as f**k and even moving the mouse looks laggy.

I reboot, everything is fine.
The next day, I can start the PC and have the same problem. Reboot and it might work, but the unreliability is driving me crazy.

This is what I've done so far.
Tested memory with memtest86+, OK
Stress tested CPU with prime 95, OK
Stress tested GPU with Furmark, OK
Stressed them both, OK
HDTune to test my SSD, OK BUT gives the INTERFACE CRC ERROR attention.
The world wide web said this is not a problem yet, so I didn't change the sata cable ( shoot me if this is the problem)

Im thinking of defect PSU. But i can't test this, no multimeter av and before going to a local store like a newbie, I wanted to ask you guys if there is maybe just someone who is known with this problem.

Thnx in advance.
 
Solution
Maybe power supply issue also. Dual video cards, you had issues, they run on more power. Added water cooler, it ads more power draw on the system. Remove the video card, system power drops and now system works. Follow the clues...

See if you can find a friend with a good power supply to test your system with.

matsz2sek

Commendable
Mar 29, 2016
2
0
1,510
Update
Disabled the GPU and used the onboard intel GPU. Problem seems fixed.
Still strange that once loaded, the GPU can get stress tested for couple of hours without failing.. But booting seems to much to handle from time to time..

Guess i'll need a new GPU.
 
Maybe power supply issue also. Dual video cards, you had issues, they run on more power. Added water cooler, it ads more power draw on the system. Remove the video card, system power drops and now system works. Follow the clues...

See if you can find a friend with a good power supply to test your system with.
 
Solution