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Hi Demétrio

As I suspected, I've been in IT since 1976, so a lot of experience helps with a good gut feel. Yes an old system, but as you say it suffices for your current needs. I would suspect you system is using DDR2 memory applicable for hardware at the time.

What you could do, as a cheap and helpful upgrade is see if you can get your hands on another stick of 1GB RAM, it should not break the bank, as DDR2 RAM is still avialable. As you indicated, you have 1.5MB of RAM, so I can deduce from that that you have a 1GB stick, and a 500GB stick, the latter is all you need to replace, to use your motherboards maximum capability of 2GB RAM.

The other issue I can see and I am sure I will be right, now that you have furnished more info, is that using too many USB ports are causing a problem too. This indicates that you current power supply unit (PSU) in the chassis, is at it's limits (i.e. could be a 200watt or 250watt unit, or aged (2003!!!) so the components (mainly those called capacitors), are burnt and leaking), thus causing the hard shutdown when you plug a device into the USB ports, or run an intense program with a data file. And yes the power demand does increase, from an idle state, when programs are opened and manage a data file. This power demand is then compounded when you use an external device, especially one that demands power from the USB port, and not from an external PSU.

Again a little money spent on a new PSU will probably fix all of your issues and return your USB ports back to full functionality, along with a stable old PC.


Andrew Brown

On 22/07/2013 01:48 AM, Demétrio Soares wrote:
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 < <>> wrote:

    Hi Gabriel

    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.


    Andrew Brown

    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.

-- Cley Faye

    2013/7/21 Andrew Brown <


        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.


        Andrew Brown

        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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