PC HARDWARE MY SYSTEM DATE CHANGES EVERY TIME I BOOT

One possibility is a dead BIOS (CMOS) battery. If you open the case to expose the motherboard, searching you should find a flat silver battery, about the size of a quarter. On the surface will be a number, likely CR2032 (maybe CR2025). The current from this battery refreshes and maintains the volatile data in BIOS, such as date / time etc. If the battery died, the BIOS will return to factory default settings. In the event the system has been altered in some way (replaced hard drive, custom RAM with different voltage requirements...), default BIOS settings may block boot-up. How to test? Power up, enter BIOS, check time. If time/date are off, the battery has likely died. How to fix? The batteries are available many places (Radio Shack, Amazon.com, maybe Walmart.. ) for less than $1. Replacing the battery, powering up, entering & refreshing BIOS {AKA "setup"}, saving settings & exiting BIOS MAY trigger the system to boot, as BIOS is capable of self detecting settings for certain components.
{Note: replacing a dead battery first is recommended but is not technically required while testing. If plugged in, BIOS should retain settings between boots).
Depending on the BIOS and any hardware changes made "post-factory", booting MAY require determining and manually entering BIOS settings for non-factory components(e.g.: RAM voltage, timing, etc.). Custom BIOS settings and other complicated solutions are beyond the scope of this introductory "Quick Fix" solution.

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The BIOS information is typically found at or near the top of the POST screen for a very short time ALR PC non / PCI = CTRL+ALT+ESC AMD advanced micro devices=BIOS = DEL Award BIOS = DEL Dtk Datatech Enterprises Co. BIOS = ESC Phoenix BIOS = CTRL+ALT+S Phoenix BIOS = CTRL+ALT+INS Restart your computer during the boot process you will see on the screen to press a certain key usually Delete or F2 to enter setup
this will differ depending on which bios you have Press and hold that key during the boot up process to enter BIOS if you have changed any of the BIOS settings by mistake you can load failsafe or optimised defaults using the arrow keys you can after you make any changes in BIOS press Esc then press the F10 button save to cmos to restart CMOS is an on-board semiconductor chip powered by a CMOS battery inside computers that stores information such as the system time and date and the system hardware settings for your computer.. this will reset your cmos

Restart your computer
during the boot process you will see on the screen to press a certain key usually Delete or F2 to enter setup
this will differ depending on which bios you have

Press and hold that key during the boot up process to enter BIOS
if you have changed any of the BIOS settings by mistake

you can load "FAILSAFE" or "OPTIMISED" defaults using the arrow keys you can after you make any changes in BIOS press Esc then press the F10 button save to cmos to restart

CMOS is an on-board semiconductor chip powered by a CMOS battery inside computers that stores information such as the system time and date and the system hardware settings for your computer..

hope this helps

Restart your computer
during the boot process you will see on the screen to press a certain key usually Delete or F2 to enter setup
this will differ depending on which bios you have

Press and hold that key during the boot up process to enter BIOS
if you have changed any of the BIOS settings by mistake

you can load failsafe or optimised defaults using the arrow keys you can after you make any changes in BIOS press Esc then press the F10 button save to cmos to restart

CMOS is an on-board semiconductor chip powered by a CMOS battery inside computers that stores information such as the system time and date and the system hardware settings for your computer..

hope this helps

If the computer cannot keep the Date and Time after you set it and when you boot up next time the Date and Time has changes or not set then the BIOS battery is flat and needs to be replaced.
When you remove the case the BIOS battery most likely will be a coin size 3volt lithium battery, type CR2032.
After replacing the BIOS battery, boot up the computer and go into the BIOS setting and set the Date & Time etc.

This means that your BIOS battery is flat/worn out and this is why it changes the date and time each time you boot up.
Replace the BIOS battery with a new one then boot up and go into the BIOS and set the correct Date and Time.

Immediate fix solution, try doing a system restore to and earlier date when the system was working fine (if you have the system restore option available) also let us know about the latest hardware /software changes done on your pc if you need further assistance. Cheers. Techofnet

Cold boot is a system reset which includes also the time. You could use an application or script to set the correct time after an cold boot.

Although this is almost always a hardware problem, pinpointing which hardware is the culprit can be a tedious task so before making any hardware changes, assume first that this may be is a software problem. Assuming that you have Windows XP installed as your OS. You can try fixing your system with System Restore. To do this, turn on your PC and press F8 during the boot-up process. Select Safe Mode and login with an Administrator Account. A pop-up window will then prompt you to enter Windows in Safe Mode or just Restore your system by using System Restore, choosing NO will automatically open up the SYSTEM RESTORE window. Choose a restore point (a point or a date where your PC worked well before having problems). Your PC will reboot with the configuration set on your selected restore point. If this doesn;t solve the problem. You can try fixing your system using your Windows XP installation CD. Just don't forget to set your CD as the first boot device.