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My dekstop didnt show any screen.

I turn on my dekstop but didnt show any screen. I check already the power supply, and try to clean up the ram, video card and other but the problem still exist. The harddisk didnt show any readable but if this is the problem at least i can get into bios. Now the bios also can be entered. The pc used is pentium 4. Can u guys help me to solve for this problem. U help i will very appreaciated it.

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If you can get into bios check if it recognizes the RAM and the Hard Drive, if it does not find the hard drive, check the HD cables for untighted cable, change the power cable, look for damaged pins or wrongly inserted cable (on an IDE HD data cable),
do you hear the (tric-tric-tric) of the HD when the computer starts?, the HD may be damaged.

Try extracting the video card and reinstall pressing firmly.

pull out the mainboard battery, wait 10 sec. and restore (even better replace with new one), you will need to recalibrate the bios date and time (and other settings if they where changed).

Posted on May 04, 2008

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Posted on Jan 02, 2017

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Blue light on power button on, but Monitor shows "no signal"


If you tried replacing your power supply but still cannot put your PC to turn on, you should try checking your memory or your RAM. try reconnecting it, clean the lids of the RAM using an eraser, make sure you erase the lids on one direction and try reconnecting it again.

1. After reconnecting the RAM, try to unplug any hard disks connected to your motherboard, remove external PCI cards or if you have external video card remove it and use the built-in video card.

2. Make sure that the connectors from your power supply going through your motherboard is not loose, dont overtighten as it may possible that you can damage your motherboard from pushing through it.

3. Now turn on your computer, if it works, then your RAM must have been faulty or you have loose connections. Try to plug the hard disks and turn on again your computer, if you tried plugging in every devices and if theres an instance that your computer didnt turn on after you have plugged in that device, then the problem will be on that device that you have just plugged, and that made the computer from not responding.

It really helps alot if you have a spare device because you can test if, the one youre using works well by replacing it with a device that in no doubt that works well.

These are just basics on troubleshooting, and i hope it will helped you troubleshoot your PC or more computers in the future.

Any clarifications or future problems, i would be happy to help you. =)

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So basically you cannot get the pc to POST. Meaning you have just a black screen when you power on the pc, right?

First off, did you attempt to update BIOS before this happened. 90% of the time this is caused by a corrupt bios.

If you are the victim of a bad BIOS flash, don't freak there are some options. First off, if the computer (or motherboard) is still under warranty the Computer (or motherboard) can be sent to the Vendor for a BIOS reprogramming.
If you are a DIY PCbuilder and the warranty is expired you can take out the bios chip andsent it someone who reprograms BIOS chips or you can buy a brand newchip form them. I will show you my people.

http://myworld.ebay.com/***angelb***

or

http://stores.shop.ebay.com/Bios-Depot__W0QQ_armrsZ1

For non-BIOS issues:

If you did not try to update BIOS before the problem started then try these troubleshooting steps.

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2. Open the case and reseat the graphics card, hard drive, and RAM.

3.Take out one of the RAM sticks if there is 2 or more. Swap the RAMsticks in different RAM slots. Try one stick at a time to see if youcan get the PC to boot. If this works, then the remaining ram sticksare damaged.

4. Set the Cmos jumper to clear. Power up the pc.Power down the PC. Set the Cmos jumper back to normal position, powerup the PC.

5. Unplug and replug all the power supply cables.

6.Check the powersupply function. Either by a powersupply voltage checker(20-25 dollars at local PC shop), get the supply tested at a PC shop(usually a free service), put the powersupply in a different pc, or trya different powersupply in the problem computer.

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Takeout one of the RAM sticks if there is 2 or more. Swap the RAM sticks indifferent RAM slots. Try one stick at a time to see if you can get thePC to boot. If this works, then the remaining ram sticks are damaged.

If it is not the RAM, you have to continue removing items such as sound cards, un-plugging hard drives and optical drives,other PCI cards. Do this one at a time until you find the culprit. If aPOST screen, meaning you can see Anything from the PC brand name toMotherboard brand name appearing on the screen.

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In computers, any number of problems can cause this - bad RAM, bad hard drive, fried voltage regulator(chip in a laptop), overheating cpu, overheating video card/gpu, there are even a few device drivers that can do this if they become corrupt. Usually, however, its not an issue with the power supply/power source.

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If the RAM swap is unsuccessful, and the system is clean, check and make sure the fans spin when the system is on.

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I Think this will slove your problem


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