Home Built Will Not turn On

arosado1970 · Oct 30, 2013

Hello all,

First, I like to tell you that I'm a newbie and have had help from a friend who's been to school for building computers. Any and all help will be appreciated.

I have built a computer with all new components except for the sound card and DVD player. Everything seemed to be installed correctly. It wouldn't turn on, but I used the guide in this forum to troubleshoot. I removed a mem stick and it booted on. I then proceeded to install all the drivers and software for the computer, as well as other things that I would need (like Adobe Reader). The initial boot was yesterday and I turned it on today with no problems to installed anti virus software etc. I also noticed that the USB ports were not working. I had inserted a flash drive and it wasn't being recognized. At that point, I decided to turn off the computer and change the RAM card to the other to see if the other stick was bad. I did that and indeed the computer wouldn't come on. I also moved the USB cord from F_USB1 to F_USB2. I put the other RAM stick in and tried to boot, but now it still will not come on. I did the paper clip test and the PSU seems to be working. What other things should I do? Below is my hardware that I have installed.

MOBO: Gigabyte 78LST-S2P
CPU: AMD FX 4100
PSU: Ultra Professional ATX 650 watt
HDD: Toshiba 2T Sata III
Sound Card: Soundblaster Model SB0790 (it's an older one)

Thanks for any help that is available!

tiny voices · Oct 30, 2013

Are you POSITIVE you have NO bent CPU pins? This is a very common cause of these issues.

Also, the on board sound card is probably better than that sound card. I would just ditch it.

arosado1970 · Oct 30, 2013

I was just working on the computer after leaving it for a couple of hours. It is now turning on with both RAM sticks in but now I have no video. I did check the pins very closely and all seemed okay to me. I think maybe the PSU is overheating b/c the fan is on the bottom and I only have the case fan and CPU fan. The case is a Cooler Master Elite 431 Plus. I think adding another fan might help but I have no idea which vent to install it in.

tiny voices · Oct 30, 2013

The PSu is probably not overheating. Actually I promise this is not it.

This does not sound like a heat issue at all. You do not need more fans.

Do you have a GPU installed?

arosado1970 · Oct 30, 2013

No I do not. I was just going to use the onboard graphics. Did I miss something?

tiny voices · Oct 30, 2013

No, you didn't miss anything.

Can you get to the bios? If so make a memtest DVD and boot to it and run it for 6 passes to see if the RAM is good or bad. This sounds like a RAM issue.

arosado1970 · Oct 30, 2013

Well i don't think i can get to the bios. I can't get anything on the monitor when I turn it on.

arosado1970 · Oct 30, 2013

Well i don't think i can get to the bios. I can't get anything on the monitor when I turn it on.

tiny voices · Oct 30, 2013

Does the system boot up? Try one RAM stick and disconnect ALL fans and Check the 24-pin, CPU fan connector, 4-pin, and HDD power and SATA connections. Then let me know. Also make sure the monitor is set to the correct type of connection.

arosado1970 · Oct 30, 2013

How do I check the monitor's connection type?

tiny voices · Oct 30, 2013

What type of cable have you connected it to the motherboard with? This is your answer.

arosado1970 · Oct 30, 2013

Alright, now I'm frustrated. I checked everything like you said and only kept one stick of RAM in. Now it won't turn on again.

tiny voices · Oct 30, 2013

Try the other stick of RAM.

arosado1970 · Oct 30, 2013

The cable is a regular VGA monitor cable.

tiny voices · Oct 30, 2013

Make sure you have NO fans connected except the CPU cooler in the CORRECT header.

http://www.tomshardware.com/forum/261145-31-perform-steps-posting-post-boot-video-problems and do ALL OF THIS.

arosado1970 · Oct 30, 2013

Will do it and get back to you. thanks for your help.

tiny voices · Oct 30, 2013

Always glad to help. Don't stress, we will get it figured out.

OldSchool84 · Oct 30, 2013

Hey,
Try turning all power off, switch the power supply switch to the off position, push the power button to off load any residual power in the capacitors. After that reset your CMOS if you can and/or take the motherboard battery out for >30 seconds.
I really think its the RAM too, but this doesn't require you to go to the store and buy more RAM.

arosado1970 · Oct 30, 2013

Alright...did everything! I even tried booting without RAM and there are no beeps. I reset the CMOS and removed battery for 30 seconds. Still no video.

arosado1970 · Oct 30, 2013

BTW thanks for helping the newbie!

tiny voices · Oct 30, 2013

It might be your motherboard. I would RMA it.

arosado1970 · Oct 30, 2013

that's a term i'm not familiar with. What's "RMA"? Also what's weird is that it was working just fine yesterday and earlier today. No problems.

tiny voices · Oct 30, 2013

You return it and they mail you a new one.

RMA "Return Merchandise Authorization"

Home Built Will Not turn On

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