Question about Dell Dimension 5100 (D51L1) PC Desktop

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Did you get the new motherboard from Dell?
Are you sure the memory is compatable with your new motherboard?

Is the processor properly placed with thermal grease, and CPU fan secure?

Are all the fans working?

When rebuilding a computer all these things are paramount, and one must know what they are doing.

Posted on Apr 03, 2008

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Computer beeps twice on start up but wont start

Two short beeps indicate a parity failure. This is normally associated with memory issues. If the computer has two sticks of memory, power down the computer and pull one of the chips. Power back on and see if you get the same issue. If you do then power down and put the one you pulled in and remove the one you left, power back up. If you still get two beeps, try the memory in another computer, or purchase new memory and try again.

There is a possiblity that it is the memory slots that are bad and not the memory. If this is the case nothing will work except a new mother board.

Feb 08, 2012 | Dell PC Desktops

1 Answer

My hp 5750 beeps 4 times what seems to be the problem??? thank u

This means that your memory is bad or not installed correctly. Open your pc up and remove all memory from the mother board, then dust it, place the memory back in and it should work. If you still have this problem, leave only 1 memory stick in and try starting up your pc, if your pc starts up then the other memory stick is bad and you will need to replace it, if your pc still does not start, remove the 1st memory stick and put the 2nd memory stick in its place and try booting once again. If this still does not fix it, then the memory slots might be bad, try putting the memory sticks in different memory slots and each time try booting your pc. If this does not work, try buying new ram, worst case scenario you will have to replace the motherboard. Or just replace the computer if both memory slots are bad on the motherboard, and i mean IF. Good luck!

Sep 02, 2010 | PC Desktops

1 Answer

Purchased two sticks of 1 G memory, want to upgrad...

Assuming you purchased the correct memory and you have two open memory slots it is very easy. Just open the computer case and look on the mother board for memory cards that look like the ones that you purchased. If there are two empty slots you just need to insert the cards into these slots (just ensure that you ground yourself before touching the cards or the mother board by anti-static band or at least touching something metal first).

When you boot up assuming the bios is fairly current should recognize the new memory and you should be good to go.

May 20, 2010 | PC Desktops

2 Answers

Dell dimension 2400 blue screen fault - page fault in non paged area. bug code 50. did system restore and changed memory board still faulty jim brand

Most likely the computer itself, the mother board in the Dells aren't very good. I would suggest the next time you buy a computer you should get a Mac. You'll have no problems at all, and you'll find that Microsoft Office for Mac runs far better too.

Sep 26, 2009 | Dell Dimension 2400 PC Desktop

1 Answer

HP a1712n How to troubleshoot MOB problem?

you can consider 4 factor on no video,it maybe video card or memory card,processor last mother board this if PSU was good,you also check memory card to other computer,somerime need only to clean terminal slot of memory by pencil eraser,eraser slot then put it back,also video card same process in cleaning try also to other computer.Instale good memory card and good video card even with out hard drive,cd room the mother board.if does not run,defective motherboard,

Mar 16, 2009 | HP Pavilion a705w PC Desktop

1 Answer

RAM installation

Hi hunter555,

First off, you've done a lot of work for nothing. What you need to do is put back the new memory. When the Dell Bios boots, it confirming that it has detected the new memory. What you need to do is hit the F1 key to reboot and continue on to the XP installation. When you open the case, it will say the same thing. Don't worry about it, it's only confirming that the case was opened. Typically, I shut off the case intrusion detection, only because I'm always adding things to the machines and it's just a extra step I have to take to boot. However, it's good to know that your bios is confirming that you've opened the case, and that you've put in new memory. You want to make sure that the setup recongizes the entire memory in the banks. So, go to the system information page and make sure that it's reading the original and the additional memory 256k you added. Otherwise your done.

Good Luck


Jan 14, 2009 | Dell Optiplex GX150 Tower Computer - 1GHz...

1 Answer

No display

Try swaping your memory with a known good stick of ram.
Are you sure your monitor is good? Video cables?
Try changing (if pci) slots when installing video card.
Other than these 3 things the only pretty sure thing is; sorry, mother board or cpu.

Jul 01, 2008 | E-Machines eMachines Desktop PC

1 Answer

Replace MB on Gateway M280E

Power down your tower, then unplug the power cord. Lay the tower on the side and remove the side plate (usally one main screw at the back end of the tower and then slides to the back and comes off) Located inside the tower on the mother board you will see the memory stick. At each end of the memory stick is a little plastic lever that when pushed gently away and down from the stick it will pop up that end of the stick. Repeat on the other end of the stick and then pull the stick out evenly. Take the memory with you to the store so as to get the same kind of memory and also to get the right PIN set. Remember to pay attention to what slot you pull the memory out of. Also keep in mind that you never want to mix memory sticks IE a 512 mem stick with a 256 ect. It is also adviseable to stick with the same manufacture of memory and not to mix and match brands.

Apr 29, 2008 | PC Desktops

1 Answer

T2958 continuous startup cycle

It sounds like there may be an issue with the memory chips. If available, take a memory stick that matches the type of memory you need for your computer. Take out all memory sticks on the motherboard and try the new memory stick in the first memory slot and see if you get the error. If so, then try it in the second memory slot.

Aug 20, 2006 | E-Machines (T2958) PC Desktop

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