my computer keeps restarting

But isn't Windows Defender defunct? That is, no longer supported? Therefore, no longer updated with fresh intel?

If so, no surprise it would draw a blank.

You don't want to CREATE a restore point you want to RESTORE to a point before you started having trouble.

I'm thinking that either System Restore is turned off or your computer is pretty well hosed.

Most computers come with a Restore partition on them. That's different then System Restore so don't get them confused. Usually you are prompted to make discs for restoring purposes when you first start the computer as new. If, for whatever reason, you don't have those discs I don't know if you'd be able to create them in Safe Mode but it'd be worth a shot. How? I'd need the make and model number of your computer so that I could look up the manual you could look up.

If you weren't prompted to make restore discs when the computer was new there may be a Restore command when your computer first boots up.

If you choose to restore your computer from disc or from the restore partition you'll lose all of the data on your hard drive and your computer will be as new from the dealer.

If you can't create restore discs and that's what you need then you're going to need a new copy of Windows for your computer.

You MIGHT be able to clean it up with an antivirus solution, if you have a virus, but if you've accidentally deleted the wrong thing or changed the wrong thing a fresh installation or an in place installation of Windows may be your easiest solution.

disclose (best to do it at the start, so you don't forget to do it!):

(1) the manufacturer and the model number of the computer, especially if it is made by Dell, Hewlett Packard (HP), Sony, IBM, Apple, etc., and

(2) which operating system (e.g., which Windows?) and the most recent Service Pack (SP) that has been installed.

Then describe the problem, but begin by describing what you did with the computer recently BEFORE the problem began -- if you can identify anything in particular, for example: installed new software (or upgraded existing software), installed an external USB drive, plugged the computer's network adapter into a router, replaced the laptop's battery, tripped over the power cord, .....

RonK's surmise is probably correct; he offers good advice, although we are all shooting in the dark without knowing the hardware and the operating system (and version).

Spontaneous rebooting has been reported after Windows XP Service Pack 3 (SP3) was installed on a computer that has an AMD CPU, although that ordinarily does not happen if the CPU is an AMD Athlon XP (4 digits)+ model such as an Athlon XP 2400+.

Sometimes spontaneous rebooting is caused by updating hardware drivers, or by installing a new device such as a DVD R/W drive, with its manufacturer's drivers, which might be outdated. Oddly enough, Microsoft Windows drivers usually work instead, but might not give you use of all features of the hardware. If this seems to be the case, then you will probably have to boot into Windows Safe Mode and run Control Panel > System > Hardware Manager to troubleshoot and replace the driver(s).

Google this:

Windows XP spontaneous reboot

or Google this:

microsoft.com:Windows XP spontaneous reboot

Be sure to read each page, to which there is a link in each result, completely, because references to other links that might be more helpful are often placed at the bottom, for example:

http://www.techspot.com/vb/topic5665.html

may solve your problem, or "How to repair Windows if you are unable to boot into Windows" can be helpful even if you can boot into Windows, because it tells you how to perform a "repair re-installation" of Windows XP.

Note: if your computer is not running "Windows XP" just substitute the OS and version for "Windows XP" in the above examples and advice.

Hi,

if you suspect your system is infected. use kaspersky trail version to get it removed. or you can also try Norton trail version for the same.

Rachana

of the research that I advised you to do?

Google: HP D530

but look out for a result from www.hpd530.com (the description is weird, so it might be a site that will install malware on your computer)

".... what should i do from there?"

Obviously, you should not re-install the Windows operating system, unless you have EITHER:

(1) a re-install disc provided by Hewlett Packard for the hardware model that you are using. Contact their customer service or tech support and ask whether they can send one. They might want proof that you bought the computer new, or maybe that you acquired it as a gift.

OR

(2) the Windows XP Professional installation disk that was used to install that OS on the computer. It seems unlikely that HP sold the computer new with that OS installed, so who installed it? Perhaps a local computer repair shop?

Use Google! By the way, I don't understand the fourth line of the additional data, which begins with "version:"

my OS is Windows XP Proffesional
Service Pack 3
Made by hewlett-packard
version: 5.1 2600 Service Pack 3 Build 2600
model: HPd530 SFF(PB603A)
system type: X65-based PC
Processor: x86 Family 15 Model 3 Stepping 4 GenuineIntel~2795Mhz"
_________________

You should still do the research to fix the rebooting problem, and if there are many other problems, then by the time that you are finished, you should be able to help others help themselves.

Read this:
http://computersoftware.suite101.com/article.cfm/my-computer-keeps-restarting-troubleshooting-windows-restarts
It helped me repair my computer