Monitor goes to sleep on booting?

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innerbeast

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Apr 12, 2013
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Hello, as this forum provide to me few very good informations I need little more help:

I went to my friends house to reinstal his OS, and I did it. Now as he has only wlan in his apartment - no utp at home I decided to take his computer to my place, so I could connect to internet (using another desktop comp to dl drivers first) but when I connected my monitor to his computer, and pressed power button, monitor went to sleep, like there is no signal. I tried another monitor (with another cable) and again same thing. Then I took this PC back to him, we tried HDMI cable and no signal.

Now facts that I know:
a) Win 7 professional x86 - basic drivers it was successful
b) PC and his monitor worked before moving it
c) PC was dusty as hell - he didn't clean it 2 years
d) all fans work on power button
e) psu - is strong enough to supply PC
f) graphic card fan is working

.....

Now I read online soutions and I tried 2 of them:
a) 30 sec pressed power button
b) removing RAM modules, and putting only 1 of them on bar closest to the proc - this worked, I managed to power up and everything was fine... I thought it fixed problem but after 2 min, after I installed all drivers needed (ethernet lan driver, motherboard drivers, graphic driver) and connected LAN (utp) cable and restarted computer (cause of drivers) everything was the same - monitor went again to sleep, even changing ram models from one place to another or putting only one of them (tried every combo) didn't helped...

So is it RAM or motherboard or gpu (I don't think it is this)?

Any thoughts?

p.s. sry for my english ...
 
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festerovic

festerovic

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Jul 16, 2008
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Can you try to boot without the GPU, just using the onboard graphics (if it has onboard that is)? When the graphics card is in the slot, it will usually automatically turn off the onboard graphics, so you will have to remove the card to test that.

Also, you could try resetting the BIOS. You can find out how to do that with the manual of the motherboard (you didn't include that info).
 
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innerbeast

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Apr 12, 2013
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I can try to boot wihout gpu - motherboard has 3 jacks for monitor on it so I think it has onboard graphics... I didn't try to reset bios never tried it before so I'm little feared ;D But I really think it has something to do with RAM - as moving it helped once, and negative charge as I cleaned so much dust from his comp that you could use it to build a castle xd...
 
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festerovic

festerovic

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Jul 16, 2008
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LOL @ dust. RE: the RAM theory you have, when there is a change to the hardware, the BIOS will recheck some stuff, which is why it might have worked the time when you moved the RAM. The BIOS reset may complicate your life if there are lots of changes from the default. I would say save the settings on paper, and reset it, and if things go south, re enter them from paper.
But that is literally the first thing I do to trouble shoot when the monitor doesn't initialize when you turn on the PC. Another test to see if the PC is making it to windows, and this is just a graphics problem, is to remote desktop on to it from another PC in your network.
 
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innerbeast

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Apr 12, 2013
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It was dust and the charge of electricity in computer that got there because after cleaning I moved computer and try to start it up too short after cleaning. I didn't touch it whole night, today everything works, even both RAM models are in...restarted it about 10 times in 2 hours period and everything is ok!

Ty man for your oppinions, sry for my english -.-
 
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