test all leads that attach to your hard drive including electrical extensions SATA
the leads from your ((motherboard to your hard drive)) Sata make sure they have a secure connections and are not faulty or just replace them they could be faulty make sure all leads that are attached to your drives dvd\cd have secure connections and are not faulty or just replace them they could be faulty ?
even something as small as an electrical extension or a faulty fan lead can cause this problem
a computer needs all of the data and electrical current to travel through every working device and to have an end for a computer to be able work properly
make sure your graphics card is securely seated with no dust in its socket
if you physically remove your graphics to check the socket card restart your computer this should activate found new hardware wizard click start control panel display desktop you can select a different desktop from the drop down list or a browse button where you can select different pictures this may vary depending on your operating system also settings you can change the settings for more or less pixels or from the drop down list pick the appropriate level of color range or troubleshoot also select advanced then general dpi normal size larger size or custom settingsalways click APPLY after making any changes click start control panel display desktop you can select a different desktop from the drop down list or a browse button where you can select different pictures this may vary depending on your operating system also settings you can change the settings for more or less pixels or from the drop down list pick the appropriate level of color range or troubleshoot also select advanced then general dpi normal size larger size or custom settingsalways click APPLY after making any changes click start control panel administrative tools computer management device manager scroll to scroll to monitors + to expand plug and play monitor you might see a yellow question or exclamation mark ? or red x you will have to update the driver right click where you have options to update driver you might download some new graphics drivers http://majorgeeks.com/SiS_UniVGA3_Graphics_Driver_d4401.html
http://download.cnet.com/sis-vga-driver-3/3000-2108_4-164001.html
hope this helps you
If you cannot access the machine after if has been powered up, it is still possible to get past the BIOS password. The BIOS password is stored in CMOS memory that is maintained while the PC is powered off by a small battery, which is attached to the motherboard.
If you remove this battery, all CMOS information (including the BIOS password) will be lost. You will need to re-enter the correct CMOS setup information to use the machine. The machines owner or user will most likely be alarmed when it is discovered that the BIOS password has been deleted.
On some motherboards, the battery is soldered to the motherboard, making it difficult to remove.
If this is the case, you have another alternative. Somewhere on the motherboard you should find a jumper that will clear the BIOS password.
If you have the motherboard documentation, you will know where that jumper is. If not, the jumper may be labeled on the motherboard. If you are not fortunate enough for either of these to be the case, you may be able to guess which jumper is the correct jumper. This jumper is usually standing alone near the battery. If you cannot locate this jumper, you might short both of the points where the battery connects to the motherboard.
If all else fails, you may have to clear the BIOS password by resetting the RTC (Real Time Clock) IC (Integrated Circuit) on your motherboard.
Many RTC
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