I have a problem with my PC. I have Asus A8N-VM CSM motherboard. It had 512 ram and it was bit slow. I cleaned the disk and did defragmentation. Then I unclicked the programs which were making my comp load up slowly. I only kept the antivirus on and unclicked all others.It was still slow compare to my Lapto which has 4gb. I then decided to upgrade ram so bought me transcend ddr 400 (pc3200) 1gb ram X4 sticks. As per the Aida4 software I have installed in comp it mentioned the ram compatible and also as per AMD website my comp can take upto 4gb. I loaded all 4 at the same time and then turned my pc on. All the led's worked and also all the fans were running but there was no beep when the processor starts. I also took the fan and heat sink off to clean it as its not been cleaned for over 4 years now. Also my keyboard and mouse wasn't detected plus my monitor screen kept saying no signal. Then I thought it might be the power so changed the Thermaltake 430w. Still my computer won't start. There is no beep noise and the processor is not starting. My monitor kept showing no signal. I have asked a friend of mine who is IT trained and he advised that if the processor not starting then it could be possible that some connection is loose. I have checked all I know of and still no luck. Can please someone help me or advise what's wrong and how can I fix it? Please help. I have added specs of my pc below. I know its old but I love thisPC and it always stood tall with me and now I don't want to give up on it. Please help.
Specifications
CPU AMD Socket 939 ;Athlon™ 64/Athlon™ 64 FX/Athlon™ 64 X2 Processors
AMD Cool 'n' Quiet™ Technology
AMD 64 architecture enables simultaneous 32-bit and 64-bit computing
Chipset NVIDIA GeForce 6150 + nForce 430
System Bus 2000/1600 MT/s
Memory 4 x184-pin DIMM, Max. 4 GB, DDR 400/333/266 ECC,Non-ECC,Un-buffered Memory
Dual Channel memory architecture
VGA Integrated GeForce 6 GPU
Dual VGA output support: DVI-D/RGB
High Definition Video Processing with max. resolutions to 1920 x 1440 @ 75Hz for RGB display
(*DVI-D can not be converted to output RGB signal to CRT.)
Expansion Slots 1 x PCIe x16
1 x PCIe x1
2 x PCI
Storage 2 xUltraDMA 133/100/66/33
4 xSATA 3 Gb/s ports Support RAID 0,1,0+1,5 NVIDIA MediaShield storage management technology
LAN Integrated Gigabit MAC with Marvell 88E1111 external PHY- NVIDIA ActiveArmor Firewall for secure networking
- NVIDIA ActiveArmor Firewall for secure networking
Audio High Definition Audio, ADI AD1986A 5.1 -Channel CODEC
S/PDIF out on back I/O port
Support Jack-Sensing
IEEE 1394 VIA 6037 IEEE 1 x 1394a ports supports 2x1394 ports
USB 8 USB 2.0 ports
Special Features ASUS MyLogo 2
ASUS EZ Flash
ASUS CrashFree BIOS 2
ASUS C.P.R.(CPU Parameter Recall)
ASUS Q-Fan
SFS (Stepless Frequency Selection) 1MHz
(*EZ Flash & CrashFreeBIOS2 only support VGA/RGB output, but does not support VGA/DVI-D output.)
Back Panel I/O Ports 1 x DVI
1 x Parallel
1 x VGA
1 x PS/2 Keyboard
1 x PS/2 Mouse
1 x IEEE 1394a
1 x LAN(RJ45) port
4 x USB 2.0/1.1
5.1 -Channel Audio I/O
Internal I/O Connectors 2 x USB connectors supports additional 4 USB 2.0 ports
1 x IEEE 1394a connector
1 x CPU Fan connector
1 x Chassis Fan connector
1 x S/PDIF Out connector
1 x 4-pin ATX 12V Power connector
24 Power connector
Front panel audio connector
COM connector
Chassis Intrusion connector
CD/AUX audio in
Support Disc Drivers
ASUS PC Probe II
Anti-virus software (OEM version)
ASUS LiveUpdate Utility
AMD Cool 'n' Quiet Utility
Accessories 1 x Ultra DMA 133/100/66 cable
2 x SATA cable
2 x SATA power cable
1 x IDE cable
1 x FDD cable
1 x I/O Shield
User's manual
BIOS 4 Mb Flash ROM
DMI 2.0
AMI BIOS
PnP
WfM 2.0
SM BIOS 2.3
ACPI 2.0
Form Factor uATX Form Factor
9.6 inch x 9.6 inch ( 24.5 cm x 24.5 cm )