why does my computer keep freezing and unfreezing

I've been having this problem for 3 months now, I believe it's an HDD problem. Videos stutter, or freeze when it freezes. Everything that uses your hard drive just stops for a while, then my HDD makes a specific noise, then it works normally again. I am willing to buy a new hard drive and give it a try. I will post here if the problem goes or not, if I did forget to post it here, please remind me on fb. com/abdelr4hman as soon as you see this, I am almost online 24/7. I ran a hard drive test, and it passed, while there's that noise which happens, and I get some error when I try to open FanSpeed, which 3 of my friends (who have the same laptop model) don't get, and don't get that noise either. Edit: One more reason I know it's my HDD, is because that programs that are cached, keep working, but never read/write anything. For instance, windows media player always caches the next 15 seconds of anything you're playing, and when this happens, it works for 15 seconds, and then it freezes. uTorrent, and IDM interface work, but if you're downloading anything, downloads freeze.

Once you click on something that requires reading/writing, it'll stop responding. If the same happens with you, it's probably your HDD. Edit 2: I changed my hard drive, cloned it, and it was the hard drive problem.
You should first check the model of RAM stick that you have on the manufacturers site for the recommended voltage setting and then make sure it is set correctly in the PC s Bios. An incorrect voltage setting may be the reason for your problems so test the PC s performance again if the voltage was incorrect. Errors can also be caused by dirty contacts, mismatched sticks or using them in the wrong slots. Check all sticks are the same make and specification, check the motherboard manual for the correct slots to use.

Remove all the sticks and clean the contacts with a soft pencil eraser and blow out the slots with a can of compressed air. When the download is complete right click the file and select Extract Here and burn the image to a CD. In windows 7 right click the extracted file, select Open With, then select Windows Disc Image Burning Tool then follow the prompts. For all other versions of windows (if you do not have an ISO burner) download this free software. Install the program and start the application. Select the top left hand option to burn image file to disk and then on the next window click on the small yellow folder icon and browse to the ISO file you have downloaded. Then click on the two grey discs with the arrow in between (bottom left) and leave it to complete the operation.

Boot the PC into the Bios setup and set the CD/DVD drive to 1st in the boot sequence. Insert the disk in the drive then reboot and the disc will load into dos. Leave the test to run through at least 8 cycles or until it is showing some errors. If errors show in the test, remove all but one of your RAM sticks and repeat the test on each stick until you find the one that is faulty. This is a long slow test and should ideally be run overnight. The memtest will not be 100% accurate but should easily detect any major faults. Always disconnect your PC from the mains supply when removing Ram sticks and earth your hands to discharge any static electricity to avoid damage to sensitive components. If performing this test on a laptop PC you should also remove the battery before removing or replacing the RAM sticks.

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