i just replaced the heatsink on my computer from the stock Athlon to the stock with black edition, (i know, a small upgrade but still better than before) but now it wont boot at all, not even to bios. the case light and all fans come on but thats about it. I built this about a year ago and have had no problems prior to this.
System build:
1 x Athena Power CA-1015CR30 Red / Black Steel MicroATX Desktop / MicroATX Slim Computer Case 300W Power Supply
http://www.newegg.com/Product/Product.aspx?Item=N82E16811192089
1 x GIGABYTE GA-MA785GM-US2H AM3/AM2+/AM2 AMD 785G HDMI Micro ATX AMD Motherboard
http://www.newegg.com/Product/Product.aspx?Item=N82E16813128394
1 x AMD Athlon II X3 450 Rana 3.2GHz Socket AM3 95W Triple-Core Desktop Processor ADX450WFGMBOX
http://www.newegg.com/Product/Product.aspx?Item=N82E16819103886
1 x ADATA 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) Dual Channel Kit Desktop Memory Model AD2U800B2G5-DRH
http://www.newegg.com/Product/Product.aspx?Item=N82E16820211188
1 x SAMSUNG Spinpoint F3 HD502HJ 500GB 7200 RPM SATA 3.0Gb/s 3.5" Internal Hard Drive -Bare Drive
http://www.newegg.com/Product/Product.aspx?Item=N82E16822152181
1 x SAMSUNG 22X Half-Height DVD Writer Black SATA Model SH-S223L LightScribe Support - OEM
http://www.newegg.com/Product/Product.aspx?Item=N82E16827151188
System build:
1 x Athena Power CA-1015CR30 Red / Black Steel MicroATX Desktop / MicroATX Slim Computer Case 300W Power Supply
http://www.newegg.com/Product/Product.aspx?Item=N82E16811192089
1 x GIGABYTE GA-MA785GM-US2H AM3/AM2+/AM2 AMD 785G HDMI Micro ATX AMD Motherboard
http://www.newegg.com/Product/Product.aspx?Item=N82E16813128394
1 x AMD Athlon II X3 450 Rana 3.2GHz Socket AM3 95W Triple-Core Desktop Processor ADX450WFGMBOX
http://www.newegg.com/Product/Product.aspx?Item=N82E16819103886
1 x ADATA 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) Dual Channel Kit Desktop Memory Model AD2U800B2G5-DRH
http://www.newegg.com/Product/Product.aspx?Item=N82E16820211188
1 x SAMSUNG Spinpoint F3 HD502HJ 500GB 7200 RPM SATA 3.0Gb/s 3.5" Internal Hard Drive -Bare Drive
http://www.newegg.com/Product/Product.aspx?Item=N82E16822152181
1 x SAMSUNG 22X Half-Height DVD Writer Black SATA Model SH-S223L LightScribe Support - OEM
http://www.newegg.com/Product/Product.aspx?Item=N82E16827151188