My cybertronpc beeps 6 times on interval but will not boot.

if the beep pattern and led light pattern it's a memory problem, try reseating the RAM. Problem and solution is described multiple times here
Dimension E310 won boot up 6 beeps
21.June.2015

you have to look at the mother board if the cause will be at the processor fan or causing by the breakdown of the power supply unit.

sounds like the tilt alarm is sounding, on the top control box are there any flashing lights? does the beeps happen at regular intervals, ie beep..........beep...........beep...........??

When your computer emits beeps when you power on the computer, it's usually means that you have a memory issue. Try re-seating the memory modules and power on the computer. If you have more the one module, insert one at a time and power on the computer. The other issue is if that model supports 4 gig memory.

ck the bios settings

you can find it here:
http://support.cybertronpc.com/index.php/Main_Page

the 6 beep codes will be in a specific timing i.e. two beeps, a space 2 more beeps, and another space and 2 more beeps.

Looks like it may be a memory problem according to the lights.

Possible memory failure

Reseat all DIMMs and restart the system to retest.

Here is the link to the beep codes and diagnostic lights for your dell optiplex gx 150 HERE

The Beep codes are in Table 2 and the diagnostic lights are in Table 3.

The beeping is the mainboard giving you a fault code!! Remove everything that you have plugged into the board except the cpu and its heatsink. Now, boot the machine, If it still beeps, check the cpu is seated correctly or return the board. If it now boots (it will still beep because no RAM is installed) then shut it down and refit each item one at a time, booting it after each item is fitted. When it stops booting again, the last item you refitted is the cause, replace it. If it boots when everything is refitted, you had a hinkey connection, Pay carefull attention to RAM sticks and expansion cards ( graphics cards, internal modems) etc. This is a common issue and removing and refitting the various components will usually cure it. TAKE NOTE that ALL computer components do not like static discharge. You may have already damaged the board or components and not know it. Make sure you discharge yourself by touching the metal chassis of the case BEFORE you touch anything else..

try go to this website download Download SeaTools for DOS now!
http://www.seagate.com/www/en-us/support/downloads/seatools/
and run diagnostic to hdd but remember stand by floopy disk to create diagnostic disk.IF this diagnostic disk check said no error so you hdd is ok.try put the ram to different slot.you pc may be is RAM or motherboard faulty

Remove your system memory. If you have 2 dimms re-seat one at a time with a boot inbetween. Clean the copper with alcohol.