Dell Desktop will not start?

Hi Princesslips,

The Studio 435MT power button light (bicolor LED) located on the front of the computer illuminates and blinks or remains solid to indicate different states. If the power button LED is a steady white it indicates that the system is fully functional and in the On state.

If the computer is not responding, do the following:

Ensure the display is connected and turned on. What is the colour of the monitor LED when switched on? 
If the display is connected and turned on, listen for a beep code.

Since you mentioned that you see a steady green light, please let us know if this light is the Power LED or any other indicator. Also, let us know the Windows Operating System you are using.

You can also click on the link below for a Youtube video on how to run hardware diagnostics on your computer:

http://dell.to/16n5ol2

Please reply for further assistance.

Thanks and regards.

Babita S
#iworkfordell
To know more about Dell Product Support, Drivers & Downloads, Order & Dispatch status -> choose your region US Customers; UK Customers; India Customers. For Dell support videos click Here.

princesslips

 Try the following, if you are comfortable working around computers:

Note: The only 100% method of testing a PSU, is to install a known working power supply.

Unplug the cord from the power supply, hold the power button in for about 15/20 seconds, open the case, unplug the 24-pin power connector from the motherboard and jump the Green wire to one of the Black wires, reconnect the power cord and power the system, if power supply's fan and the hard drive run, then the PSU should be good.

Note: Do not remove any wires from the plug, use a small piece of wire or a paper clip as a jumper.

Power supply checks out, again disconnect the power cord, hold the power button in for several seconds to discharge the residue power, reconnect the 24-pin connector to the motherboard.

Remove all PCI cards from the system, take out the video card [if applicable], disconnect all peripherals, except the monitor, mouse and keyboard and disconnect the power & data cables from all drives. 

Reconnect the power cord and power system on, see if you get a different LED indication on the power button, or 'Beeps'.

No difference, remove the memory from the system and try again.

Still shows no signs of life then you are looking at a motherboard replacement & maybe a processor. 

Note: the processor rarely fails and the only method I know of checking a processor, is to install it a compatible working PC, or use a known working processor.

Bev.

princesslips

A Dell OEM Studio XPS 435MT refurbished [aka used] motherboard can be purchased from the following:

http://www.mrsparepartsonline.com/motherboards/dell-studio-xps-435mt-core-i7-1366-motherboard-dx58m01-r849j/?gclid=CIb_qbbzhboCFabm7Aod-D0Aag

http://www.amazon.com/Genuine-Dell-Motherboard-Studio-System/dp/B003KJ1SB8

http://www.ebay.com/sch/i.html?_nkw=xps%20435%20mt&clk_rvr_id=529049400733&adpos=1o1&MT_ID=71&crlp=19062742251_2416792&device=c&geo_id=10232&keyword=xps+435+mt&crdt=0

Bev.