I have transferred my PC from a slimline case to a standard one. The
only other thing I have changed is the CPU fan and power supply.
I have had some problems getting the system to stay powered up, but
have resolved that (didnt have power button connectedto mobo). The
problem now is that the monitor is not picking up a video signal
(message on screen "no video input"). I'm using the same graphics card:
Try to change your pwer supply, try to check the watts of your supply if it fits to your motherboard...there must be something wrong when you change your casing. try to check your motherboard pins and setting. and kindly reset the bios.
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with the computer off and unplug from wall power.
if your techie you could remove the side panel and see if the cpu fan is dust free. blow it out with compressed air .wait a couple minutes. then plug it back in turn it on and verify if the cpu fan is spinning or not. replace the fan if it doesn't spin. the computer thinks the cpu is overheating. hope it helps
There are three or four screws at the back of the system at the left side (as you face the back), remove them. Remove the top of the case. Disconnect the power cables from the power supply to the main circuit board (there may be two, but often just one 20 to 24 pin one, the second cable being 4 pin square for the CPU). Disconnect the power to the optical drive and to the hard drive. Slide the power supply toward the front of the system about 1/2 inch and pull up. Note, on some models the clearance is nearly none to none and you may need to remove the screws on the mainboard to slide the mainboard about 1/2 inch toward the right (as viewed facing the back of the system). To put the new power supply back, reverse the process.
This is an indication of overheating within the PC. Open the PC case and clean all the air vents. Take the heatsink and fan off the CPU and give it them a good clean. Put the heatsink and fan back on to the CPU and start up the PC. check that the fan on the heatsink is running smoothly.
Also, make sure the vents on the power supply are clear and the fan on the power supply runs well.
If you go into the BIOS setup, you may be able to monitor the fan and the CPU temperature.
Verify your fans are for the CPU and case are moving. You can remove the Pc cover and turn on the Pc. Watch the cooling fan on top of your CPU heat sink, it should begin spinning when you turn on your PC. If it doesn't then with the PC unplugged, make sure the connector for the fan is seated properly. From behind the PC you should be able to feel the Power Supply cooling fan moving air. Either of these could cause your PC to over heat and shut down.
Is your power supply fan working? If not, the supply will certainly get hot. If the fan is dirty, that will also cause overheating. If you haven't cleaned out the tower in awhile, you might want to blow it out, and also make sure the cpu fan isn't clogged (google how to clean them safely, without damaging them). You might also have a slightly shorted motor in your power supply, if it's not dirty or clogged up, but those are the main things that heat up in a desktop. If you open it up and let it run, you should be able to locate where the heat's coming from.
it seems your computer needs cleaning and servicing, my advice is to open your pc and use dust cleaner,you can buy a can from any computer outlet, spray all the dust out also all fans,the heat sink on the CPU,make sure also the fan that is connected via the CPU,I believe dust has accumulated between the fan and the CPU,by this the cpu cannot read the from the hard drive all because of so many dust that has accumulate between the cpu, it hard to read the data from hard drive and CPU.
hope this work for you.
clean the cpu cooler slots and replace the thermal compound on the cpu ....make sure you clean off the old thermal compound .....only a thin layer of new thermal C will do all most see through ... hope this helps my friend
This happened to my to my HP Media center Edition PC. I'd have to unplug the power from the outlet, let it stop flashing and the power up again. It would run for a short time and then shut off with the annoying amber / blue flashing light.
I found it was a heat problem on mine - specifically, the CPU cooler. After shutting down and opening the PC, check to see 1) if the CPU fan is running smoothly and 2) if there is a lot of dust and dirt on the CPU cooling fan and heat sink (and rest of the case for that matter).
Gently clean / vacuum the insides of the case AND power supply as best you can. Carefully vac the fan blades and heat sink to clear the dirt and dust that prevents the heat from being blown away by the fans.
When complete, you might even want to take the PC outside and reverse the vacuum so that air can be blown into tight places in the case. A can og compressed air can do the job instead, too.
Many PC's have BIOS settings that enable smart fan usage, when CPU reaches certain temp, the fans kick on high, when it reaches a higher temp, auto shutdown. I do not reccommend disabling these until you find out what is overheating. I had a PC that randomly shut off, something was shorting out on my mobo.
Are you sure you connected all the power cables from the power supply that need to be connected to the motherboard? Please tell me what motherboard and processor you're using so I can further assist you.