Hi and thanks for the prompt responses,
reboot is "hard" (instant black screen) using 2 usb 2.0, yeah Andrew
must be right: old machine low resources, after i installed windows 7
i could no
longer use my external disc on the 2 front usb ports 1.1, instant hard
reboot aswell, struggling and avoiding buying a new pc since
i can still do almost everything in this one, not a gamer...normally
all usb ports work and system is ok, just isn't a racer.
Max ram this Motherboard accepts is 2GB... Asrock K8Upgrade bought 2003 ~
The powerpoint files open fine on an Asus 10" running XP, 32bits, 1GB
ram, with Office 2007 portable...
On Sun, Jul 21, 2013 at 5:52 PM, Andrew Brown <email@example.com
I agree, you make some valid points, but the MS hive (collection
of the boot code plus apps running in memory in one big monolith
file, unlike the Linux kernel with separate "clients" commucating
with the kernel, all separate), is not as robust as we would like
to believe, even in Windows 7 and 8. So as you covered in your
reply, any bad data files forcing it's host app, as in this case
LO with a presentation data file, to exceed it's memory
boundaries, will cause the processor and microcode to force a
reboot intentionally or accidentally, due to creating instability
with the rest of the memory content, the hive. This is the
weakness of the MS way of doing things.
As to my coverage of malware in the data files, it could cause a
system crash and reboot, if the malware code is written badly or
I also noticed that Demétrio Soares is running Windows 7 32 bit on
only 1.5MB of RAM, this in itself could be the problem. Although
Windows 7 can run on 1.5GB of RAM, it is recommended to run it
on at least 2GB, and even better with 3 or 4GB. The 4GB will be a
bit of a waste as a 32bit system can only see a physical max of
3.2GB, so installing 4GB would not see or use the last 800MB (as
layman terms as I can explain it). With only 1.5GB of RAM, the O/S
is using at least 1GB of this RAM leaving 500MB for apps and data
file, so I would also expect a system crash if the data file was a
large one. As an example I am using Windows 7 64bit with 6GB of
RAM, and I am consuming 35% (2GB) of this RAM right now as I type
this email, Thunderbird open, Firefox open, and not much else
except some system resources running.
On 21/07/2013 06:25 PM, Gabriel Risterucci wrote:
While it's totally true that malicious code might be embedded in
anything (especially ms formats... but we won't talk about this
:)), I doubt it would trigger a reaction as bad as a reboot,
especially under recent OS.
Crashing a user program is very unlikely to cause a system
reboot, except if it call some regular reboot code, that would
trigger a "clean" reboot, windows closing and stuff. Most likely
output is simply the program crashing/getting in an unstable state.
As I said, it's not completely ruling out the possibility of a
catastrophic crash caused by some code issue, but it's fearly
reasonnable to suppose that loading this file make LO expand to
use more memory than usual, touching a faulty area. If the
computer usually work without issue, maybe the ppt file is very
large, or very complex, or the LO loading routine doesn't handle
it nicely and cause the memory cost to increase.
It would be interesting to know wether the reboot is "hard"
(instant black screen) or soft (windows closing down normally).
Also, if the ppt file isn't sensitive, it would be useful to put
it on some kind of file sharing site for people to try loading it.
2013/7/21 Andrew Brown <firstname.lastname@example.org
My two cents worth would rather be to focus on the actual
Powerpoint data file that is the source of the problem, when
attempted to being opened. If it has any corruption in it, or
possibly a piece of malware made to disguise and represent
itself as a Powerpoint presentation, then I would accept it
crashing and forcing a reboot of the PC, especially if there
is no malware protection in place, on a Windows system
especially. Virus writers can easily embed bad and malicious
code into documents, presentations and spreadsheets.
Try another known working presentation data file, and see if
this also causes the crash with LO and the PC, if not, then
you know where your source of your problem is.
On 21/07/2013 05:20 PM, Gabriel Risterucci wrote:
There is not much stuff (if any) in LO that could cause a
reboot of a
computer. Although it's not possible to completely rule
out a LO issue, I'd
suggest you run some memory testing program (like
memtest86+), as it's much
more likely that your issue is related to faulty
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