Old system on new mobo and cpu - black screen followed

deldrin

Reputable
Feb 4, 2015
3
0
4,510
Hello, I have problem similar to one in this thread: http://www.tomshardware.co.uk/answers/id-1872439/hdd-mobo-cpu.html
I upgraded from o athlon 64x2 3600 and Asus M2V to DG35EC and E8400. Out of, other people's approval, and my own slip-up I let windows(7) start booting and after inevitable bsod, i got black screen instead of post. Next restart, again. Note, that this mobo doesn't give post message like i am used to, and doesn't even beep on success.
Could have something bad happen there from this?

Also, before abovementioned issue, i replaced thermal paste it came with, with one i had laying around (unfortunately, not from any big brand) and it has made cpu heat to 70°C in bios.
What are usual idle temperatures for this processor?

I will try to locate problem by removing everyting but mobo, and adding one device at the time. But I don't have cover plate for lga775, and i want to make sure no dust gets in, is it safe to cover socket with sponge from under processor storage box and turn it on?

Edit: i found some info about this paste i used
- Density at Temp. 20 ° C: 2.58 g / cm3, - the ignition temperature of 350 ° C, - freezing point: -50 ° C - refractive index: 1.405, - heat at 50 ° C: 0.243 Cal / g K - heat transfer coefficient at 0-150 ° C: 0.88 W / m K - dielectric constant at 100 Hz: 4.7 (± 0.1), - the volume resistivity: 5 x 10 power of 14 ohm-cm, - the dielectric loss tangent at f = 100 Hz: 0.020 (± 0.003), - the range of operating temp.: -50 ~ 200 ° C

Google Translate™
 

deldrin

Reputable
Feb 4, 2015
3
0
4,510
What i am worried about the most is that windows tried to push instrucions for old mobo into new mobo, and that made some permanent damage be it physical or logical. Is such thing possible? Also what about overheating and using sponge as dust cover?
 

kanewolf

Titan
Moderator
Probably didn't hurt anything. You don't want to turn on a system with the conductive foam in or on the CPU socket. You want a non-conductive surface under the motherboard. Plain brown cardboard would protect the bottom of the motherboard and still be non-conductive.
 

deldrin

Reputable
Feb 4, 2015
3
0
4,510
I reapplied thermal paste on cpu, turned it on and left it running for about half an hour in BIOS. At start it showed 38 then it stabilised around 57-58. What has me worried is that when I touched heat sink it wasn't warm at all, definitely not like what it was saying. Meanwhile chipset temperature read 43 and it was really hot to touch.
Could it be because cpu sensor is broken or my thermal paste is old?