The so-called system does not recognize the mouse compaq presario c500 laptop keyboard, it is to point to power on self test, the system for "mouse did not detect" or screen shows "no installation mouse", but in fact is installed the mouse and its driver.
 
To make the mouse work, one is to hardware working properly, and the second is to load the correct driver, the third is to carry out the correct Settings. And the system does not have admitted the mouse fault by bad contact, mouse model setting error, mouse hardware failure, viruses or mainboard failure caused, generally follow the steps inspection and processing:
 
1. The first pull plug the mouse and host interface plug, check whether the contact is good, the treatment after restart your system.
 
2. If a fault is still exist, pulled out the mouse compaq presario cq60 100ea laptop keyboard interface plug, in a COM interface put up, and the CMOS of COM interface Settings make corresponding revision, restart the start.
 
3. If there is no problem solving, then check whether there is at the bottom of the mouse model set the switch, and if there is, try to change its position, restart your system. If there is no problem solving, is still the switch to the in situ.
 
4. If the fault is still exists, the use substitution method, a notice will be a normal of the same type of mouse and host connection, and then boot startup.
 
5. If the fault disappear, then explaining the mouse is a hardware failure cause, check the mouse compaq presario cq61 laptop keyboard interface plug and attachment without problems, such as no problems, then check the mouse X axis and Y axis movement organization or photoelectric receiving circuit system without problems.
 
6. If use substitution method after fault still exist, then explaining is soft failure. Exit Windows, in the DOS next check config.sys file or AUTOEXEC. BAT file is already joined the mouse driver; If not, then load mouse driver.
 
7. If in the DOS had already joined the MOUSE driver, again under Windows inspection SYSTEM. The INI file BOOT paragraph, whether or not to join the MOUSE. DRV = < filename > Settings item.
 
8. If the fault is still exists, the use KV300 testing antivirus, cold start again, check the mouse compaq presario v6500 laptop keyboard driver is in good condition, if any problem should be reinstalling. If the driver is good, then check the contents of the CMOS whether be modified, such as be modified should reset, then again boot startup.
 
9. If the above examination fault still exist, suspect that motherboard line have fault, send professional repair.



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