Another System turns on, no POST problem

Dell Dimension 4700 desktop
January 7, 2011 at 23:08:39
Specs: Windows XP
Being a little cheap and new at building computers, I decided to use parts of my Dell Dimension 4700 case: power supply, hard drive, and cd drive. I replaced the old motherboard with an MSI G31TX-P21 and the processor with an Intel Pentium e6500 and also adding an EVGA GeForce 9500 GT graphics card.

When I press the power button, the system seems to work. Fans spin and LED lights are on, but as for the monitor, when I turn it on it goes back to hibernating. I've looked up countless things for the source of this problem, if my parts are compatible, etc, but I keep coming up to a dead end. Here are the things I've tried to no avail:

1. Taking out the Graphics Card and turning it on.
2. Taking out the RAM (just 1 or both).
3. Making sure the MoBo isn't grounded.

I don't think the processor is incompatible. Maybe it's the Power Supply? I think it only powers 250v. I thought it may be because the graphics card had insufficient supply, but when I took the card out for the onboard video, it was still blank. I know Dell creates specific things for their products(for example, the Front Audio Panel wire has no where to go, but I don't think it's that essential) but I'm not sure how impossible it is to upgrade it...
For now, I'll replace the Power Supply and Hard Drive... doubt it'll do anything.

Help would be greatly appreciated.

See More: Another System turns on, no POST problem

Report •

January 7, 2011 at 23:35:10
Sounds like some nice hardware, but that power supply is way too small for the system you are shooting for. In the motherboard manual they should have told you the min. power requirements for the power supply. Typically with the newer motherboards and cpus you want to go with at least 500w power supply, but with that graphics card I would go with a 600w to be safe. Make sure the new power supply has an ATX 24-pin power connector and ATX 4-pin 12V CPU power connector, otherwise you will have the same issue as you are having now. Most of the new power supplies have these connectors.

Good Luck, sounds like it will will be a nice systems when it gets fired up!

Report •

January 7, 2011 at 23:49:49
If you used the existing hard drive without reformatting that could be the problem. The changes in hardware is incompatible with the existing install.

Report •

January 8, 2011 at 07:06:49
I believe the correct model number is G31TM-P21.

You should have benchtested the board before you installed it in the case. Disconect all the drives, take out the video card & install only one stick of RAM. Connect the monitor to the onboard video port & unplug all external devices except the keyboard. Make sure the 24-pin main ATX plug & 4-pin ATX12V plug are both fully seated in the board sockets, then try powering up & see if you can get a display. If not, take the board out of the case & benchtest it like you should have done in the 1st place.

NOTE: if your power supply only has a 20-pin main plug, do NOT install a video card. The extra 4-pins on the main plug supply power to the PCIe slot.

Report •

Related Solutions

January 8, 2011 at 09:54:14
Nice advice! I was worried if it was the Power Supply, but I didn't see if it was a common problem among the other similar problems I researched. It's my first time building a computer and after doing all that research, I got those 3 new upgrades for only $237 roughly. :)

Since, taking out the graphics card and then powering the system gave me no results, I've come to the conclusion that lack of power to the card isn't the first problem. Though the card DOES need at least 350v.

I couldn't find the minimum power requirement for the MoBo using mickliq's link, so if anyone could help me find that information to get an estimate of how much power I need, that would be awesome!

Report •

January 8, 2011 at 21:04:42
Alright, so iBiggee and wizard-fred were right!! I got a new 500v Power Supply and a 500gb Hard Drive and it did just the trick~ It is now working and currently in Windows XP installation mode. :)

Another problem solved:
When I turned it on, it got past the MoBo logo, but went to a black screen with a blinking cursor at the corner. After researching plenty of other similar situations, I discovered it was closely related to BIOS settings. Since the default is to boot the HD first(which is empty) the Disc drive was at a halt. What I did was take out the SATA cable, turned on the computer, waited for the CD drive to start, then quickly plugged in the SATA cable back into the Hard Drive. xD

It might be bad but it worked!

Thanks again everyone for the input!

Report •

January 8, 2011 at 21:28:41
You should just change the boot order in the bios so that it boots from the cd drive first until the OS is installed.


Report •

Ask Question