Where can i buy restore cd for dell optiplex gx620

SOURCE: i have a dell optiplex gx620 and it wont turn on

As you can imagine, this is not simple thing to diagnose.
First, we need to try Dell's steps to fix...
Remove non-essential peripherals…
Except for the monitor, keyboard, and mouse, remove all external peripherals including:

• Scanner
• Printer
• Modem or Network cables
• Personal Digital Assistant (PDA)
• USB flash drive or other external Hard Drive
• Any other external devices (e.g., USB-attached devices)
• Remove the computer from the docking station, if you are using one

Remove non-essential peripherals…
Except for the monitor, keyboard, and mouse, remove all external peripherals including:

• Scanner
• Printer
• Modem or Network cables
• Personal Digital Assistant (PDA)
• USB flash drive or other external Hard Drive
• Any other external devices (e.g., USB-attached devices)
• Remove the computer from the docking station, if you are using one

Try rebooting. If that doesn’t work, Dell states you need to do the next step.
Remove and Reseat Basic Hardware items:

1. Power Cord
2. Memory
3. Hard Drive

At this point, Dells says if that fails contact them.

If my hunch is correct, you may have something on the motherboard shorting a connection or you have a blown capacitor. Get some “canned air” and blow out the computer thoroughly. Some people have reported the same symptom having dust or other debris causing the issue, so give it a good blowing out,

At the same time, inspect your motherboard thoroughly for an anomalies. If you see anything resembling the picture below, you have a serious motherboard problem which will require replacement.

SOURCE: Adding network drivers to dell optiplex gx620

Just download the drivers here the link http://support.dell.com/support/downloads/driverslist.aspx?c=us&l=en&s=gen&os=WW1&osl=en&catid=&impid&SystemID=PLX_PNT_P4_GX260

SOURCE: How to open the case

http://support.dell.com/support/edocs/systems/opgx620/en/ug/A02/mtcvrop0.htm#wp1051283

SOURCE: Windows 7 drivers for Optiplex GX620

for drivers u visit driversdownload.com, register and then dowload required drivers for ur comp. i doubt ur computer is affected with virus. pls check it also

SOURCE: Dell OptiPlex GX620 starts up then shuts down repeatedly

Try this: remove the DMOS battery and unplug the on/off switch plug. It's the one in the corner near the power supply. To be sure follow the cable from the front on/off switch board on back to this plug. Then plug the A/C cord in, if the system boots up fine, then replace the front panel power on/off swith board. Naturally you will not be able to power off the computer using the power switch (since we unplugged it), so you will have to just pull the plug. Hope this helps. Joe