Computer Problem

[Manzcar]

Didn't know where to put this if anyone can help at all.

My wife was on the computer this morning and the the picture got all twisted and the computer seemed to freeze. I was like uhhh turn the computer off and turn it back on (thats what the IT guys tell me to do when something screwy goes on with my PC at work).

Now the computer doesn't boot up. The fan turns on cause I can hear it running but the computer does not boot up.

I am expecting that this means something very bad, but what is it.

My computer is a E-machines T6420 specs are something like

Chipset: NVIDIA® nForce™® 410
Memory: 1GB DDR (2 × 512MB), 400MHz dual channel
Expandable to 4GB
Hard Drive: 200GB HDD (7200rpm, 2MB cache)
Optical Drive: 16x DVD±RW multiformat double layer drive
Media Reader: 8-in-1 digital media manager (Secure Digitalâ„¢ (SD), smart media, micro drive, memory stick, memory stick PRO, compact flash, multimedia card, USB 2.0)
Video: NVIDIA® GeForce® 6100 GPU
up to 128MB of shared video memory
PCI-Express® (PCI-E x16) slot available
Sound: 6-channel (5.1) high definition audio
Network: 10/100Mbps integrated Ethernet LAN (RJ-45 port)
Modem: 56K ITU V.92-ready fax/modem (RJ-11 port)
Peripherals: Premium multimedia keyboard, 2-button wheel mouse, amplified stereo speakers
Ports/Other: 5 USB 2.0 ports (4 in back, 1 in media reader), 1 VGA external connector, 1 serial port, 1 parallel port, 2 PS/2 ports (keyboard and mouse), 5 audio ports (2 in front, 3 in back)
Dimensions: 14.25"H x 7.25"W x 16"D
Weight: 22.5lbs

The store said your warranty is up nothing we can do. The computer manufacturer says the same exact thing. So I know that this is a relatively very cheap computer but was wondering if anyone had ideas as to what would cause this problem, if it could be fixed, how much it would cost, and any other advice would be great.

ohh well thanks for your time and effort.

[Hraesvelg]

Are there a series of beeps/clicks when you turn it on (non normal ones, that is?)

[Manzcar]

no beeps no clicks just sound of the fan running.

[Hraesvelg]

It sounds like it might be your video card.

[Entropy]

Video card or Motherboard, your video card is built right into the motherboard, so just replace the motherboard. It's pretty easy take out the old one and hook up the new one the same way and it should boot right up. Heres the Motherboard you need.

[Manzcar]

Thanks alot Entropy I'll look into doing that. Is it really easy to replace for a computer dum-dum like me?