I have the same problem with my computer "Dimension 5150c" but i took off the panel off on the side and dusted it out and it still cuts off the power button blinks orange, plus the computer runs Extreamly loud ( i think its the fan.. )
No more then likely ur power supply went out i would suggest u take it in to get a free estimate on what it would cost to fix it or go out and buy a power suppy at best buy or another computer store
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Your problem either lies in hardware or software, I have found it normally to be a software problem. In which case you need to either try to repair the windows installation or complete a fresh install of your operating system. If you need to retrieve information from your computer send it to a computer technician.
Turn the computer off.
Disconnect the AC power.
Remove the side-panel.
Buy a can of compressed-air, and give your computer a "blow-job" to remove dust from "everywhere", including the fan(s).
If you still get noise, then it's time to replace the fan.
Take the computer to any computer-store, so that they can sell you a new fan that matches the current fan.
hello! firts i would to know the type of the machine .coz when you decide to change the power supply it has to be the same make /type of powersuply to work correclty .
see how the wires are going to the board ie colour code
Try running that program on the computer with the problem. If this does not fix the issue please let me know what devices you are connecting through. Ex. Directly into cable modem or through a router.
As a temporary measure, taking the side panel off the dell 5150c stopped it from shutting down, so in my case it was clearly a heat problem, as suggested by previous the poster. The following instructions assume you're comfortable replacing computer hardware components - do at your own risk!
The solution is to buy an 'air duster' and some thermal compound for the CPU heat sink. If your CPU fan doesn't sound healthy (mine didn't), also buy a new one (ca. £20 on ebay: search for G9474 ).
Read the service manual: http://support.dell.com/support/edocs/systems/dim5150C/en/sm/index.htm for details on how to install / remove the fan and heat sink.
Clean out dust from the heat sink with air duster. Remove the fan, and clean or replace (recommended). Also clean the grill in front of the fan. Clean off old thermal compound from the CPU / heat sink and replace with a thin layer of fresh compound. Replace heat sink and side panel and you're done.
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