Integrated NIC Crazy lost Packet & display crazy black screen to solve the small note _ router

I have a comparison of old cow pulled a car desktop computer, is 3 years ago 1000来 block money back to students. Recently moved to find after the boot crazy black screen. Helpless, the big rectification today.

First thought is the graphics interface loose, removed the reload, still black screen ...

Then think that the graphics driver is damaged, reload, still ...

Then think that the system is too old (installed XP), reload, still ...

Then installed an Ubuntu, not black screen, but the speed is very slow, often suspended animation ...

Helpless, and then take apart the chassis, the graphics card down a look-I, all is gray, clear off, install an XP, boot, fix. No, black screen.

But found connected to the router crazy lost packet, ping about 10 times to ping to a time, the Web page or something, let alone.

Test the network cable on the other machine, everything is OK.

Ping the machine by the other machine on the LAN, and drop the package as usual--locked to the local NIC problem.

Various Settings network card (TCP/IP configuration), invalid ...

Reload NIC driver, invalid ...

Finally, the 100M network card is set to 10MB, done. It is estimated that the bandwidth of the router and the network card does not match, my network card can not adapt (although the configuration of the auto) caused by the loss of packets, which also explains why about 10 times lost 1 times the reason.