No video at all

[brockssracer]

I was just installing win 7 on my mums pc. I was doing the second round of updates and it finished all those and restarted. now I have no signal from the video card or onboard video. The pc is nothing flash but enough to run it. I cant see anything on the screen to work on it. bios doesnt even come up. any ideas on what I should do?

 

[LiquidSnak]

Does the monitor turn on? (lights, words?)

 

[brockssracer]

the screen works as I am using it on my other computer, I am just changing the cable round. when it is connected to the computer with the problem just the standby light stays on. When I turn that computer going by the hard disk activity light it is booting up into windows I just cant see anything.

 

[LiquidSnak]

And this is with both a graphics card and the onboard video? Do you leave the card in when you switch to onboard video?

 

[brockssracer]

I have tried with both the card in and out, nothing seems to bring the video up....

 

[LiquidSnak]

Could you try switching your power supply from the working machine into the machine that shows no video?

 

[brockssracer]

not really, my machine is alot higher spec and would take some time to get it out. I might just put another hard disk in the low spec one and start again and see what happens.

 

[LiquidSnak]

I doubt it is your hard disk, since you cannot even see a bios. That narrows it down for me to hardware that includes your motherboard and power supply.

 

[EzioAuditore]

Windows boots successfully but no display comes up, no post etc.. Am i getting it right?
Can you hear the beeps while the pc is booting up?

 

[brockssracer]

I hadnt got finished doing all the updates and installing all the drivers for the other parts in the pc. I am almost certain it is going into windows as the hard drive is active for a while. I am guessing in the 2nd lot of updates bout 100 of them one of them caused the issue but I have no way of verifying which one. I am not hearing any of the beeps though.

 

[LiquidSnak]

Help us help you, and fill out your system specs please

 

[brockssracer]

ok ill give it a go...

40gb hd
1.25gb ram ddr400
leadtek winfast 128mb vid card
mircostar ms-6533 m/b
3com network card
cd rom (put a dvd rom in there to install)
thats about it I think

 

[LiquidSnak]

make and wattage rating of your power supply? processor?

 

[brockssracer]

250w seasonic psu
I know its a socket 478 cpu just dont wanna pull the heat sink off as I am out of thermal paste atm. I know it is an intel p4

 

[brockssracer]

It was running 7 fine as i did the first lot of updates bout 60 odd and rebooted and all was sweet, but it shat itself after the second lot of updates. This was running xp previously

 

[LiquidSnak]

How many sticks of DDR do you have installed?

 

[EzioAuditore]

I don't know much about hardware troubleshooting, couldn't help much.. Things you can do-
Clear CMOS - 3 Ways to Clear the CMOS - Reset BIOS
Check your graphic cards in other pc
Check your ram sticks if they are properly sitting in their slots and that they're not faulty.
PSU ofcourse as LS said.
Btw, did you try overclocking your pc ever?