I've been having some BSOD crases recently, ran chkdsk/ r from recovery
console and this has solved the crashes, but I'm now getting the "standard"
paging file error message:

Limited Virtual Memory
Your system has no paging file, or the paging file is too small.

To fix this problem, go to System in Control Panel, click the Advanced tab,
and under Performance, click Settings. On the Advanced tab, click Change.
Click 'Custom size,' and then type an initial or maximum paging file size.

I want to attempt to resolve this in line with the KB article 315270,
(4. On the File menu, click Properties. Click the Security tab to view the
current permissions.
5. Click Add, type computer name\system, and then click OK.  
6. Click Add, type computer name\Administrators, click OK, and then click
OK. Note that you must type Administrators, not Administrator)

unless I'm being really stupid, the properties menu from the file menu
doesn't have a security tab. Where would I be able to look at administration
permissions in order to attempt changing allocated paging file sizes?
(Incidentally, I am system administrator).

Don't know if this helps but a complete system search including hiddens
cannot find "pagefile.sys", there literally isn't one on my system, as others
have reported).

Additionally, could the paging file error also account for the fact that the
computer is currently taking 20-30 minutes to start up each time?

Any help kindly received

tomhop